Only after Xiangyang finished speaking did Xiao Hua understand. Xiangyang's Dao Foundation had been damaged by the myriad thunderbolts of Myriad Thunder Valley. Thunder Beasts were innate spirit beasts, exceptionally capable of gathering thunder and controlling lightning, and their inner cores contained the essence of countless thunderbolts. This thunder essence was certainly incomparably powerful, yet for Xiangyang, whose Dao Foundation had been injured by myriad thunderbolts, it was also a fine medicine for repairing his Dao Foundation! Just like venom from a poisonous snake: the poison in its venom could kill an ordinary person, but for someone on the verge of death from potent poison, it might also be a miraculous medicine to fight poison with poison!
This method Xiangyang had found for repairing his Dao Foundation with thunder essence was also born of desperation. He had searched through the Thunder Control Sect's records and unearthed this secret technique from piles of old papers. It had only been revealed to Xiangyang and Yan Qinglian before they left the Thunder Control Sect.
Of course, the Thunder Beast inner cores required by this secret technique could only be original inner cores, not pills refined by mortal fire. As for how many Thunder Beast inner cores were needed, that depended on the extent of Xiangyang's damaged Dao Foundation!
This meant Xiangyang's request inevitably differed somewhat from Zhen Ye's. If using inner cores to repair a Dao Foundation was an unorthodox prescription, then using inner cores to refine pills was the proper prescription. Pills refined from Thunder Beast Inner Cores were of great use to lightning cultivators, especially cultivators like Zhen Ye at the Golden Core stage, who craved rare pills all the more. To speak frankly, fellowship within the same sect might not necessarily make Zhen Ye part with even a few Thunder